Screw



FIG. 1 is a front elevational view

FIG. 2 is a top plan view

FIG. 3 is a bottom plan view

FIG. 4 is a rear elevational view

FIG. 5 is a left side elevational view

FIG. 6 is a right side elevational view

FIG. 7 is an enlarged right side elevational view

FIG. 8 is an enlarged side view

FIG. 9 is a perspective view

FIG. 10 is an enlarged sectional view taken along line 1—1 of FIG. 1; and,

FIG. 11 is an enlarged sectional view taken along line 2—2 of FIG. 8.

The broken lines showing the screw are included for the purpose of illustrating the environmental structure and form no part of the claimed design. 

We claim the ornamental design for a screw, as shown and described. 